My first App got listed in the Windows Store! The Simple Dice Roller allows defining arbitrary dice rolls by using „dice codes“, e.g. the dice code „3d12+8“ results in a roll of 3 twelve-sided dice and the addition of 8 to the roll’s result. Separating dice codes by commas allows several rolls to be made at once.
Download the App, it’s free! Or have a look at the product page for more details.